Improvement in circular wood-splitting machines



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j CIRCULAR WOOD-SPLIT'IING MACHINE. No.18Z,188 Patented Sept. 12, 1876.

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CIRCULAR WOO-D-SPLITTING MACHINE. No.182,,188. Patented Sent.1Z,1876.

WITN ESSFS ATTORNEYS UNITED STATES PATENT Orrrcn.

CHRISTIAN O. HALL, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF HIS RIGHTTO ARCHIB ALD RIDELL, OFSAME PLACE.

IMPROVEMENT IN CIRCULAR WOOD- SPLITTING MACHINES.

Specification forming part of Letters Patent No. 182188, dated September12, 1876; application filed January 8, 1876.

To all whom it may concern: 7

Be it known that I, CHRISTIAN O. HALL, of Chicago, in the county of Cookand State of Illinois, have invented a new and valuable Improvement inCircular Wood-Splitting Machines; and 1 do hereby declare that thefollowing is a full, clear, and exact description of the constructionaud'operation of the same, reference being had to the annexed drawingsmaking a part of this specification, and to the letters and figures ofreference marked thereon.

Figure l of the drawings is a representation of a plan view of mymachine for splitting wood, and Fig. 2 is a side view of the same. Fig.3 is an end view of the machine, and Fig. 4 a central sectional view ofthe out ting-knife. v

This invention relates to machines for splitting wood to form hoops,veneers, &c.; and the iuven tionconsists in the arrangement and novelconstruction in connection with feeding-rollers of a circularsplitting-knife, and an elastic roller on the 'ar'oor of the said knife,as hereinafter more fully set forth.

In the annexed drawings, the letter A represents a preferablyrectangular frame in connection with which I propose to illustrate myinvention. This frame affords bearings upon its upper rails for spacedshafts B B, having pulley-wheels a a. It also affords bearings for avertically-vibrating frame, O,in the outer end. of which is mounted atension-roller, D. Immediately below shafts B B, and intermediatelythereto, is mounted a shaft, D, having a central pulley, b, in the samevertical plane with pulleys a. a, and upon one end an actuating-pulley,c, by means of which motion is communicated to the said shaft D.

As shown in Fig. 1, shafts B B are each provided upon their contiguousends with feedrollers d d, and their position is slightly oblique to thelength of the frame, the object of which will hereinafter appear. Erepresents an endless belt, which passes around pulleys am on shafts BB, and pulley b on shaft D. This belt is sufficiently loose to allow adegree of slack, which will be taken up by tension-roller D, so thatwhen motion is communicated to shaft D, the said belt will cause motionto be given to the feed-roller bearing shafts B B, and the timber placedupon a vertically adjustable table, F, will be fed to a splitting orcutting wheel, G, the construction of which will be hereinafterexplained.

Shafts B B being at an angle to the frame the action of feed-rollers d01 will be to saw the stuff to be cut into lengths against the top rail6 of the frame, the effect of which will be to prevent the timber frombeing forced outward therefrom, and will cause the timber operateduponby the circular cutting-knife, to be out into lengths of equalthickness.

The table being vertically adjustable, stuif of any thickness may besplit up into lengths. The circular cutting-knife G, before alluded to,is keyed or otherwise suitably secured upon a shaft, H, having itsbearings in a strong metallic plate, J, which is pivoted at fto anupright, g,- of the frame, so that the shaft H is allowed to have adegree of vertical vibration which is regulated by means of bolts h,which pass through curved slots 8 in the said plate, and clamp itimmovably against the end of the frame, when the desired adjustment hasbeen obtained, and the said clamp-bolts are set up. By this means, thecutting-knife being set at an angle to the horizontal plane, will cutone edge of the strip beveled, but when the shaft is arrangedhorizontally the edge out will be straight. The circular cutting-knifeG, as shown in Fig. 3, is beveled outwardly, and a rubber pressurewheel,J, is jammed against its outer surface by means of a clamp-plate, K,actuated by a nut, n, applied upon the screw-threaded end of the saidshaft, as shown in Fig. 3. Pressure-wheel J, during the passage of theknife through the wood, will bear down upon the wood being cut, and willhold it in position, and the said knife being adjustable in the usualmanner to or from rail 6, strips of vari ous thicknesses may be obtainedfrom a single machine. a

In case I so elect, I may use a chain in stead of a belt for driving thefeed-rolls, or I may employ gears for the same purpose.

What I claim as new, and desire to secure by Letters Patent, is-

1 In a machine for splitting wood, the combination of the circular knifeG, and the elas- In testimony that I claim the above I have ticpressure-roller J on the same shaft, subhereunto subscribed my name inthepresence stantially as specified. of two witnesses.

2. The shaft H, provided with the circular knife G, and elasticpressure-roller J, attached OHRIUTIAN HALL t0 the pivoted plate J, incombination with Witnesses:

the feed-rollers dd, operated by suitable mech- A. T. HEMINGWAY,

anism, as described. D. G. DUELL.

